# ядро
## Bulgarian
### Etymology

Borrowed from Russian ядро́ (jadró), from Proto-Slavic *ędro.

### Pronunciation

* IPA: [jɐˈdrɔ]

### Noun

ядро́ • (jadró) n (relational adjective я́дрен)
* (botany, literal) kernel of a nut, pith of a stem
    Synonyms: я́дка (jádka), сърцевина́ (sǎrceviná)
* (sociology) active core, operational group or cluster within a social structure
    парти́йни ядра́ ― partíjni jadrá ― [political] party's cores
* (biology) nucleus of a cell
* (physics) nucleus of an atom
* (astronomy) core of astronomical entity (star, supernova, planet, moon, comet)
* (astronomy) nucleus of astronomical nebula
* (astronomy) galactic center
* (computing) core of a processor
* (computing) kernel of an operating system
* (mathematics) nullspace (subcategory which maps onto the co-domain's null element under homomorphisms)
* (linguistics) nucleus of a syllable (syllabary element which takes on the prosodic peak)
    сри́чково ядро́ ― sríčkovo jadró ― syllabic nucleus

#### Declension
### References

* “ядро”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Sofia: Bulgarian Academy of Sciences, 2014
* “ядро”, in Речник на българския език [Dictionary of the Bulgarian Language] (in Bulgarian), Chitanka, 2010

### Anagrams

* родя (rodja)

## Kazakh

Alternative scripts :
| Arabic | يادرو |
| Cyrillic | ядро |
| Latin | iadro |

### Etymology

Borrowed from Russian ядро́ (jadró), from Proto-Slavic *ędro.

### Noun

ядро • (ädro)
* core
* nucleus
    атом ядросы ― atom ädrosy ― atomic nucleus
    жасуша ядросы ― jasuşa ädrosy ― cell nucleus
    ядроның бөлінуі ― ädronyñ bölınuı ― nuclear fission

#### Derived terms

* ядролық (ädrolyq)
* ядролықсыз (ädrolyqsyz)
* ядрошық (ädroşyq)

## Kyrgyz
### Etymology

Borrowed from Russian ядро́ (jadró).

### Noun

ядро • (yadro)
* nucleus

## Pannonian Rusyn
### Etymology

Inherited from Old Slovak jadro, from Proto-Slavic *ędro. Cognates include Carpathian Rusyn ядро́ (jadró) and Slovak jadro.

### Pronunciation

* IPA: [ˈjadrɔ]
* Rhymes: -adrɔ
* Hyphenation: ядро

### Noun

ядро (jadro) n (related adjective ядрови)
* kernel, pit, stone
    ядро ореха ― jadro orexa ― walnut kernel
* (botany) core (the part of a fruit that contains seeds)
* (chemistry, physics) nucleus
    ядро атома ― jadro atoma ― atomic nucleus
* (cytology) cell nucleus
* (figurative) core, gist, essence, heart
    Synonym: сущносц (suščnosc)
* (algebra, category theory) kernel
* (computing) core (of a processor)
* (computing) kernel (of an operating system)

#### Derived terms

* виядровац pf (vijadrovac)

### Further reading

* Medʹeši, H., Fejsa, M., Timko-Djitko, O. (2010) “ядро”, in Ramač, Ju., editor, Руско-сербски словнїк [Rusyn-Serbian Dictionary] (in Pannonian Rusyn), Novi Sad: Faculty of Philosophy
* Fejsa, M., Šlemender, M., Čelʹovski, S. (2022) “kernel”, in Анґлийско-руски словнїк [English-Rusyn Dictionary] (in Pannonian Rusyn), Novi Sad: Faculty of Philosophy; Ruska matka, →ISBN, page 160

## Russian
### Etymology

Inherited from Proto-Slavic *ędro.

### Pronunciation

* IPA: [(j)ɪˈdro]
* Audio:(file)

### Noun

ядро́ • (jadró) n inan (genitive ядра́, nominative plural я́дра, genitive plural я́дер, diminutive я́дрышко)
* (botany) seed, stone
* (historical) cannonball, round shot
* (linguistics) nucleus (a vowel or syllabic consonant in a syllable)
* (cytology) nucleus (an organelle which contains genetic material)
* (physics) nucleus (cluster of nucleons)
* (biology) nucleus (cluster of neurons)
* (astronomy, geology) core (of a planet, star, or galaxy)
* (astronomy) nucleus (of a comet)
* (computing) core (of a processor)
* (computing) kernel (of an operating system)
* (physics) cone (of a flame)
* (athletics) shot (heavy iron ball)
* (sociology) core members, activists (in a group)
* (mathematics) core (set of allocations that cannot be improved)
* (mathematics) nullspace, kernel (set of all elements mapped to the zero element by a transformation)
* (mathematics) kernel (a function used to define an integral transform)

#### Synonyms

* се́мя (sémja)
* су́щность (súščnostʹ)

#### Related terms

* я́дерный (jádernyj)
* ядрёный (jadrjónyj)
* ядро́вый (jadróvyj)
* ядротолка́тель (jadrotolkátelʹ)

#### Descendants

* → Bulgarian: ядро́ (jadró)
* → Kazakh: ядро (ädro)
* → Kyrgyz: ядро (yadro)

## Ukrainian
### Etymology

Inherited from Proto-Slavic *ędro.

### Pronunciation

* IPA: [jɐˈdrɔ]
* Audio:(file)

### Noun

ядро́ • (jadró) n inan (genitive ядра́, nominative plural я́дра, genitive plural я́дер)
* (botany) core, kernel
* (astronomy, geology) core (of a planet, star, or galaxy)
* (physics) nucleus
* (cytology) nucleus
* (neuroanatomy) nucleus
* (astronomy) nucleus (of a comet)
* (figuratively) core, kernel, nucleus (centrally important element or group of elements in a system, collective etc.)
* (historical) cannonball, round shot
* (athletics) shot (heavy iron ball used for the shot put)
* (computing) core (of a processor)
* (computing) kernel (of an operating system)
* (mathematics) kernel

#### Derived terms

* я́дерний (jádernyj)
* ядро́вий (jadróvyj)

### Further reading

* Bilodid, I. K., editor (1970–1980), “ядро”, in Словник української мови: в 11 т. [Dictionary of the Ukrainian Language: in 11 vols] (in Ukrainian), Kyiv: Naukova Dumka
* “ядро”, in Горох – Словозміна [Horokh – Inflection] (in Ukrainian)
* “ядро”, in Kyiv Dictionary (in English)
* “ядро”, in Словник.ua [Slovnyk.ua] (in Ukrainian)